/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.iceberg.filter;

import org.apache.druid.java.util.common.DateTimes;
import org.apache.iceberg.expressions.Expression;
import org.apache.iceberg.expressions.Expressions;
import org.apache.iceberg.expressions.Literal;
import org.apache.iceberg.types.Types;
import org.joda.time.DateTime;
import org.joda.time.Duration;
import org.joda.time.Period;
import org.junit.Assert;
import org.junit.Test;

public class IcebergTimeWindowFilterTest
{
  @Test
  public void testFilter()
  {
    String intervalColumn = "eventTime";
    DateTime currentTimestamp = DateTimes.nowUtc();
    IcebergTimeWindowFilter intervalFilter = new IcebergTimeWindowFilter(
        intervalColumn,
        new Period("P2D").toStandardDuration(),
        new Period("P1D").toStandardDuration(),
        currentTimestamp
    );
    Expression expectedExpression = Expressions.and(
        Expressions.greaterThanOrEqual(
            intervalColumn,
            Literal.of((currentTimestamp.getMillis() - Duration.standardDays(2L).getMillis()) * 1000)
                   .to(Types.TimestampType.withZone())
                   .value()
        ),
        Expressions.lessThanOrEqual(
            intervalColumn,
            Literal.of((currentTimestamp.getMillis() + Duration.standardDays(1L).getMillis()) * 1000)
                   .to(Types.TimestampType.withZone())
                   .value()
        )
    );
    Assert.assertEquals(expectedExpression.toString(), intervalFilter.getFilterExpression().toString());
  }
}
